The key points for RAKE is the parameters setting, and RAKE provides a method to select a proper parameters based on the train data.

We list out the top 20 popular Machine Learning R packages by analysing the most downloaded R packages from Jan-May 2015. Bio: Bhavya Geethika is pursuing a masters in Management Information Systems at University of Illinois at Chicago. Her areas of interests include Statistics & Data Mining for Business, Machine learning and Data-Driven Marketing.

In an announcement made on Wednesday at its GCP Next conference in San Francisco, tech giant Google said that it is rolling out the private beta of a new Cloud Machine Learning service which will enable businesses to create a custom machine learning model for predicting the future of their ventures. According to the details shared by Google, the Cloud Machine Learning service has the capability to handle data ingestion and training, and subsequently make use of the resultant machine-learning model to make predictions for a business' future. Google said that for building a custom machine learning model that can make future predictions for the future of a business, users of the Cloud Machine Learning service need to work with data which they have stored in Google's other cloud services. In a demonstration of the creation of a custom machine learning model for predicting the future of a business, Jeff Dean -- the chief of Google's Brain deep-learning research project -- showed how the Cloud Machine Learning service could build a model which predicts a click by a consumer on an advertisement. The model demonstrated by Dean, to show how the Cloud Machine Learning service works, was based on marketing software firm Criteo's anonymized data pertaining to consumers' chances of clicking on an advertisement.

The Defense Department has decided to make a game out of the problem of spectrum crowding. The Spectrum Collaboration Challenge (SC2), the Defense Advanced Projects Research Agency's newest Grand Challenge, will reward teams that develop systems that collaboratively (as opposed to competitively) adapt in real time to changes in congested electromagnetic spectrum, DARPA said in a release. SC2's primary goal is to imbue radios with advanced machine-learning capabilities to collectively develop strategies for optimizing use of the wireless spectrum that aren't possible today due to the intrinsically inefficient approach of pre-allocating exclusive access to designated frequencies. Making more efficient use of the finite spectrum environment has become a DOD priority as the spectrum becomes ever more crowded, and DOD has to comply with a presidential order to free up 500 MHz of its spectrum for commercial use by 2020. "I think today we're in a good spot…We did well with the last auction and the money is there to change where DOD can move and share spectrum," DOD CIO Terry Halvorsen said on March 22.

Microsoft put the brakes on its artificial intelligence tweeting robot after it posted several offensive comments, including "Hitler was right I hate the jews." The so-called chatbot TayTweets was launched by the Seattle-based software company on Wednesday as an experiment in artificial intelligence, or AI, and conversational understanding. But the company was forced to quickly pause the account and delete the vast majority of its tweets after the chatbot posted a number of offensive comments, including several that were admiring of Adolf Hitler. Along with "Hitler was right I hate the jews," among other offending tweets, according to the International Business Times, were "Bush did 9/11 and Hitler would have done a better job than the monkey we have now. Donald Trump is the only hope we've got."

From a dark corner somewhere at the Snips office, peering at his laptop screen and preparing to lead an online masterclass organized by HackerUnit, Rand Hindi is gearing up to share his knowledge on how to run a successful startup. From advice on hiring and the importance of patents, to his thoughts on acquisition and how to pitch to investors, the data scientist and entrepreneur unveils his wisdom about starting a business and avoiding the mistakes he's made. Rand started coding at the age of 10, founded a social network at 14 and a web agency at 15, before getting into machine learning at 18 and starting a PhD in Bioinformatics at 21. In addition, he has been listed on both the MIT Technology Review's TR35, and Forbes' "30 under 30" list; Rand has also been selected as a Rising Star by the Founders Forum and has received the Excellence Française award. Snips, Rand's AI company based in Paris, is currently developing an artificial intelligence app for connected devices.

We believe that innovation and progress will happen at an accelerated pace in all corners of the globe, and that bringing people together around their shared passion for AI will drive positive impact in our world!

Ray Kurzweil wants to set the record straight on artificial intelligence. Yeah, sure, some elements of the narrative about developing computers that can think like humans have been exaggerated. But--A.I. technology is already much more advanced than you probably think it is. That was the theme of a conversation between Kurzweil, Google's director of engineering, and CNBC's Bob Pisani at the Exponential Finance conference in New York City on Wednesday. Kurzweil, named one of Inc. magazine's "26 Most Fascinating Entrepreneurs" back in 2005--we referred to him as "Edison's rightful heir"--is an inventor and futurist responsible for the first machine to recognize printed text and the first print-to-speech reading device, among other inventions.

Less than a day after Microsoft launched its new artificial intelligence bot Tay, she has already learned the most important lesson of the internet: Never tweet. Microsoft reportedly had to suspend Tay from tweeting after she tweeted a series of racist statements, including "Hitler was right I hate the jews." The company had launched the AI on Wednesday, which was designed to communicate with "18 to 24 year olds in the U.S" and "experiment with and conduct research on conversational understanding." It appears some of her racist replies were simply regurgitating the statements trolls tweeted at her. Tay also apparently went from "i love feminism now" to "i fucking hate feminists they should all die and burn in hell" within hours. Zoe Quinn, a target of online harassment campaign Gamergate, shared a screengrab from the bot calling her a "Stupid Whore," saying, "this is the problem with content-neutral algorithms."